Ford Sigma engine

Ford Sigma engine
Overview
ManufacturerFord Motor Company, Yamaha Motor Company[1][2]
Also calledZetec-S
Zetec-SE
Duratec
Duratec Ti-VCT
Production1995–present
Layout
ConfigurationStraight-4
Displacement1.2 L; 75.8 cu in (1,242 cc)
1.4 L; 84.7 cu in (1,388 cc)
1.5 L; 91.5 cu in (1,499 cc)
1.6 L; 97.4 cu in (1,596 cc)
1.7 L; 102.5 cu in (1,679 cc)
Cylinder bore71.9 mm (2.83 in)
76 mm (2.99 in)
79 mm (3.11 in)
80 mm (3.15 in)
Piston stroke76.5 mm (3.01 in)
81.4 mm (3.20 in)
83.5 mm (3.29 in)
Cylinder block materialaluminium
Cylinder head materialaluminium
ValvetrainSOHC 2 valves x cyl.
DOHC 4 valves x cyl. w/Ti-VCT
Compression ratio10.0:1, 10.3:1, 11.0:1, 11.8:1
Combustion
SuperchargerOn 2002 1.0–litre Ford Fiesta
Fuel systemElectronic fuel injection
Sequential multi-port FI
ManagementPCM, Siemens
Fuel typegasoline
Oil systemPressure-fed with full flow oil filter
Cooling systemWater-cooled
Output
Power output60–155 PS (44–114 kW; 59–153 hp)
Torque output109–162 N⋅m (80–119 lb⋅ft)
Dimensions
Dry weight1.6 L Zetec - 81 kg (179 lb)
1.6 L Duratec - 90 kg (198 lb)
Emissions
Emissions target standardEuro 4, Euro 5
Emissions control systemsClose-coupled, closed loop, three-way catalyst with oxygen sensor
Chronology
PredecessorCVH Engine
Valencia-HCS engine
SuccessorFord EcoBoost engine

The Ford Sigma is a small straight-4 automobile engine introduced in 1995 by Ford Motor Company. Its first evolution was sold as the Zetec-S (not to be confused with the trim level), then Zetec-SE and finally, in later years, renamed Duratec.[3] The last upgrade of the engine is named Duratec Ti-VCT. Conceived for Ford's smaller models, the motor was intended to replace the older HCS (a derivative of the even older Kent unit) and smaller capacity CVH units.

  1. ^ Cite error: The named reference lesoir was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference autonews was invoked but never defined (see the help page).
  3. ^ Fuel, performance and emissions Ford Fiesta, Ford.co.uk, 21 April 2009.